Table of contents

1. Introduction to Genetics51m
2. Mendel's Laws of Inheritance3h 37m
3. Extensions to Mendelian Inheritance2h 41m
4. Genetic Mapping and Linkage2h 28m
5. Genetics of Bacteria and Viruses1h 21m
6. Chromosomal Variation1h 48m
7. DNA and Chromosome Structure56m
8. DNA Replication1h 10m
9. Mitosis and Meiosis1h 34m
10. Transcription1h 0m
11. Translation58m
12. Gene Regulation in Prokaryotes1h 19m
13. Gene Regulation in Eukaryotes44m
14. Genetic Control of Development44m
15. Genomes and Genomics1h 50m
16. Transposable Elements47m
17. Mutation, Repair, and Recombination1h 6m
18. Molecular Genetic Tools19m
- Genetic Cloning
  9m
- Methods for Analyzing DNA
  9m
19. Cancer Genetics29m
- Overview of Cancer
  21m
- Cancer Mutations
  7m
20. Quantitative Genetics1h 26m
21. Population Genetics50m
- Hardy Weinberg
  19m
- Allelic Frequency Changes
  31m
22. Evolutionary Genetics29m

3. Extensions to Mendelian Inheritance

Overview of interacting Genes

Genetics

3. Extensions to Mendelian Inheritance

Overview of interacting Genes

Previous problemNext problem

2:37 minutes

Problem 1e

Textbook Question

Which of the following traits would you expect to be inherited as quantitative traits?
Coat color in dogs

Verified step by step guidance

Understand the concept of quantitative traits: Quantitative traits are traits that are influenced by multiple genes (polygenic inheritance) and often show a continuous range of variation, such as height, weight, or skin color. These traits are also influenced by environmental factors.

Determine if coat color in dogs could be a quantitative trait: Coat color in dogs can be influenced by multiple genes, such as those controlling pigment production, pigment distribution, and patterning. This suggests that coat color may exhibit polygenic inheritance.

Consider the variation in coat color: If coat color in dogs shows a wide range of shades and patterns (e.g., black, brown, white, brindle, merle), this supports the idea that it is a quantitative trait.

Evaluate the role of environmental factors: Quantitative traits are often influenced by the environment. For example, the appearance of coat color might be affected by factors like sunlight exposure or nutrition, further supporting its classification as a quantitative trait.

Conclude based on the evidence: Based on the polygenic inheritance, the continuous variation in coat color, and potential environmental influences, coat color in dogs is likely to be inherited as a quantitative trait.

Verified video answer for a similar problem:

This video solution was recommended by our tutors as helpful for the problem above

Video duration:

Play a video:

Was this helpful?

Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Quantitative Traits

Quantitative traits are characteristics that are influenced by multiple genes and can be measured on a continuous scale, such as height, weight, or coat color. Unlike qualitative traits, which are typically determined by a single gene and exhibit distinct categories, quantitative traits show a range of phenotypes due to the additive effects of several alleles.

Polygenic Inheritance

Polygenic inheritance refers to the phenomenon where multiple genes contribute to a single trait. Each gene may have a small effect on the phenotype, and the cumulative impact of these genes results in the continuous variation observed in traits like coat color in dogs, which can range from light to dark shades.

Environmental Influence

Environmental factors can significantly affect the expression of quantitative traits. For example, the coat color in dogs may not only be determined by genetic factors but also influenced by environmental conditions such as temperature, nutrition, and exposure to sunlight, leading to variations in the phenotype that are not solely attributable to genetics.

Watch next

Master Interacting Genes Overview with a bite sized video explanation from Kylia

Start learning

Related Videos

Related Practice

Multiple Choice

The relative time of divergence from a common ancestor between two species can be estimated by which of the following methods?

views

Multiple Choice

Which of the following terms describes an interaction between two genes?

Polygenic traits are controlled through which of the following ways.

Polygenic traits are usually continuous traits?

For the traits listed in the previous problem, which do you think are likely to be multifactorial traits, with phenotypes that are influenced by genes and environment? Identify two environmental factors that might play a role in phenotypic variation of the traits you identified.

294

views

Textbook Question

Write a short essay that explains why multiple and lethal alleles often result in a modification of the classic Mendelian monohybrid and dihybrid ratios.

359

views

Textbook Question

Compare and contrast broad sense heritability and narrow sense heritability, giving an example of each measurement and identifying how the measurement is used.

409

views

Textbook Question

In a cross of two pure-breeding lines of tomatoes producing different fruit sizes, the variance in grams (g) of fruit weight in the F₁ is 2.25 g and the variance among the F₂ is 5.40 g. Determine the genetic and environmental variance (VG and VE) for the trait and the broad sense heritability of the trait.

395

views

Show more practices

Download the Mobile app

Privacy

Do not sell my personal information

Accessibility

Patent notice

Sitemap

Which of the following traits would you expect to be inherited as quantitative traits?Coat color in dogs

Key Concepts

Quantitative Traits

Polygenic Inheritance

Environmental Influence

Watch next

Which of the following traits would you expect to be inherited as quantitative traits?
Coat color in dogs